Mark Ruffalo has signed on to portray the Hulk in six films following the impressive debut of blockbuster superhero tale Avengers Assemble.

Ruffalo's turn as Bruce Banner and his angry green alter-ego has been widely praised. Avengers Assemble (titled The Avengers outside the UK) is on course to be one of the year's biggest films and has received strong reviews. Joss Whedon's film opens in the US this weekend after debuting in the UK and elsewhere last month.

"The experience was great," Ruffalo told the Collider site during a video interview in which he revealed his six-film deal. "I really had a good time. It was fun, and I love that group of people." Marvel studios supremo Kevin Feige said last month that a new solo Hulk film was being considered. "When it'll be, who knows," he said. "But the conversation's definitely started." Ruffalo said at the same event in London that he planned to "try and get Joss Whedon in a room and work out what could be a Hulk movie, with Kevin's blessing of course".

There have been two recent Hulk films, both considered underwhelming, though Ang Lee's 2003 film Hulk has its advocates. Australian Eric Bana played Banner in that movie, while Edward Norton took on the role for 2008's The Incredible Hulk, which was directed by Frenchman Louis Leterrier.

Ruffalo had the advantage, for the first time, of playing the Hulk via motion capture in Avengers Assemble. The film also features Iron Man (Robert Downey Jr), Thor (Chris Hemsworth) and Captain America (Chris Evans), all of whom first appeared in their own solo movies.